Sam had taken me shopping. Amber wasn't home when we got back - a note on the dining table read, be back tonight. See you guys soon.
"Why did we need to buy entirely new clothes for tonight?" I asked, as Sam held up a fine, blue-patterned shirt. "What was wrong with my normal wardrobe?"
"Well, it's a bit lacking in grace, babe." Sam said matter-of-factly, putting the shirt to one side and holding up a suit jacket while she pursed her lips. "Do you want to wear a jacket, or did you want to go a little more casual?"
I shrugged. "Dealer's choice." I replied. "I'm going to hit the shower, come join me once you're all finished up choosing my outfit."
"Your date is an hour!" Sam protested with a smile. "You can't be thinking of shower sex this late in the game, surely?"
"Last I checked, it's still my birthday. I'm pretty sure that means I still make the rules."
Sam rolled her eyes at me. "Fine, you addict. Go. I'll be there in a few."
Grinning, I began chucking my clothes on the floor as I headed into the bathroom. Sam and I shared a bathroom sat between our two bedrooms, but we spent so much time in each other's rooms that we pretty much had one giant bedroom in two separate spaces.
As I started up the shower, I heard Sam moving around in her room as she decided what I was going to wear to meet my mysterious date. So far, all I'd figured out was that I knew whoever I was about to go and meet, and Sam was talking like the possibility of tonight ending in sex was all but guaranteed. Sometimes, having a girlfriend who didn't give a shit who else you slept with on the side was incredible. But, having a girlfriend who actively found you a fuck buddy on your twenty-first birthday was even better.
The sound of the shower door opening made me turn around. Sam was slyly leaning against the frame, completely naked. Her amazing huge tits were perfectly sat on her chest, and her legs were crossed so I could only see the beginning of her gorgeous pussy lips. Her red hair hung loosely around her shoulders and chest, exactly the way she knew I liked it.
I said nothing as I pulled her in, shutting the door behind her. Our lips met with a passion we rarely exhibited anymore, so used to being able to fuck around the house whenever we wanted that it rarely had the spark of excitement and surprise. But the ferocity my stepsister kissed me with now was a fervour that we hadn't properly experienced in several months.
As my hands wandered freely over her body, squeezing her ass and teasing her tits, hers gently fondled my dick with enough motion to bring a sense of satisfaction without building it to the point of orgasm. "Someone's eager." She laughed around my mouth as she felt my full erection.
"Says you!" I chuckled back.
Sam lowered herself down onto her knees, licking my shaft from the bottom all the way up to its tip. "You have no idea." She said, before engulfing my entire seven inches in her mouth. I sighed with content and placed my hand gently on her head as she moved. Sam was an amazing cocksucker, and I couldn't believe how lucky I was to have this kind of treatment whenever I wanted. I looked down at my beautiful stepsister and girlfriend as she worked, her eyes looking up at me with that sly twinkle, and her hand buried between her legs as she treated me.
After a few minutes of enjoying the special treatment, and enjoying the sight of Sam's eyes locked on mine, I beckoned to her, and she immediately rose to kiss me. Our tongues duelled ferociously as our hands explored each other once again, and then I turned her around and lined my dick up with her pussy.
She groaned as I entered her, and I wasted no time in giving her the pounding I knew she loved. She grunted again and again as I slammed against her perfect ass, my hands firmly holding and massaging her tits. She reached back with one hand to cup my neck, her face turned back towards me, her eyes filled with love and lust.
I lowered my head to her neck, sensually nuzzling my mouth against her. As she sighed with pleasure and tilted her head to one side to give me better access, I bit down, drawing a gasp of surprise from her.
"Aaaahh, shit." She moaned, as I kissed her neck passionately in the spot I'd bitten. "You're a right pain in the ass, you know that?"
"I could be." I laughed, moving a finger along her body to grasp her juicy buttcheek.
"Don't you dare." She grunted, moving her hand back to steady herself against the wall. "Fuck, John, I'm about to cum!"
"So am I." I replied, feeling her pussy tightening around my shaft. "Where do you want it all, sis?"
"Fill me up, brother." She squealed, losing herself as she came. "Cum inside my pussy!"
I grunted as I thrust deep inside her and let loose everything I had. I recharged pretty fast, so despite unloading everything I had earlier this morning, I could feel a pretty big load of cum shoot inside Sam's pussy.
"Damn, you haven't pulled the 'sis' card in a while!" Sam commented as I pulled out of her.
"I know." I grinned as I kissed her. "I thought you'd like it, seeing as you were particularly invigorated this time."
Sam took some body wash in her hands and began washing my dick clean gently. "I did like it, you're right. But you need to go and get dressed and get off to your date now. I just hope a shower shag hasn't taken it all out of you."
"Nah." I shrugged as her hands massaged my cock, even bringing it back up to an erection. "I'll just last even longer now because I'm all empty." I kissed Sam one last time, and then waved goodbye as I got out of the shower to go and meet my mysterious date.
****
Sam had given me directions to a nice restaurant a few towns over, so it took me nearly an hour to drive there. Of course, because I'd been a bit busy sticking my dick in her, that meant I was a little late for my date.
She'd chosen to dress me in a cream-colored shirt and black pants. I'll be honest, once I saw myself dressed, I understood why Sam felt the need to drag me shopping for a couple hours - nothing I'd owned previously was this good.
"Table for John?" I said to the server at the door as I entered.
"Of course." He said with a slight French accent as he looked down his list. "Your lady has already arrived - please, follow me."
I felt the prickle of butterflies begin in my stomach as I followed the server into the restaurant - but I think I pretty much swayed when I saw the knockout date sitting at my table. Because I did know her.
Amber was sat with a glass of red wine, dressed in a stunning light blue dress that left one shoulder bare, although I could see an identical light blue bra strap running over that shoulder. The dress clung tightly to her torso, accentuating the curves of her breasts, and then hung loosely past her waist.